array(
			'name'            => _x( 'Favorites', 'Profile activity screen sub nav', 'buddypress' ),
			'slug'            => 'favorites',
			'parent_slug'     => $slug,
			'screen_function' => 'bp_activity_screen_favorites',
			'position'        => 30,
			'item_css_id'     => 'activity-favs',
			'generate'        => bp_activity_can_favorite(),
		);

		// Additional menu if friends is active.
		if ( bp_is_active( 'friends' ) ) {
			$sub_nav[] = array(
				'name'            => _x( 'Friends', 'Profile activity screen sub nav', 'buddypress' ),
				'slug'            => bp_get_friends_slug(),
				'parent_slug'     => $slug,
				'screen_function' => 'bp_activity_screen_friends',
				'position'        => 40,
				'item_css_id'     => 'activity-friends',
			);
		}

		// Additional menu if groups is active.
		if ( bp_is_active( 'groups' ) ) {
			$sub_nav[] = array(
				'name'            => _x( 'Groups', 'Profile activity screen sub nav', 'buddypress' ),
				'slug'            => bp_get_groups_slug(),
				'parent_slug'     => $slug,
				'screen_function' => 'bp_activity_screen_groups',
				'position'        => 50,
				'item_css_id'     => 'activity-groups'
			);
		}

		parent::register_nav( $main_nav, $sub_nav );
	}

	/**
	 * Set up the component entries in the WordPress Admin Bar.
	 *
	 * @since 1.5.0
	 *
	 * @see BP_Component::setup_nav() for a description of the $wp_admin_nav
	 *      parameter array.
	 *
	 * @param array $wp_admin_nav See BP_Component::setup_admin_bar() for a
	 *                            description.
	 */
	public function setup_admin_bar( $wp_admin_nav = array() ) {

		// Menus for logged in user.
		if ( is_user_logged_in() ) {

			// Setup the logged in user variables.
			$activity_slug = bp_get_activity_slug();

			// Unread message count.
			if ( bp_activity_do_mentions() ) {
				$count = bp_get_total_mention_count_for_user( bp_loggedin_user_id() );
				if ( ! empty( $count ) ) {
					$title = sprintf(
						/* translators: %s: Unread mention count for the current user */
						_x( 'Mentions %s', 'Toolbar Mention logged in user', 'buddypress' ),
						'<span class="count">' . bp_core_number_format( $count ) . '</span>'
					);
				} else {
					$title = _x( 'Mentions', 'Toolbar Mention logged in user', 'buddypress' );
				}
			}

			// Add the "Activity" sub menu.
			$wp_admin_nav[] = array(
				'parent' => buddypress()->my_account_menu_id,
				'id'     => 'my-account-' . $this->id,
				'title'  => _x( 'Activity', 'My Account Activity sub nav', 'buddypress' ),
				'href'   => bp_loggedin_user_url( bp_members_get_path_chunks( array( $activity_slug ) ) ),
			);

			// Personal.
			$wp_admin_nav[] = array(
				'parent'   => 'my-account-' . $this->id,
				'id'       => 'my-account-' . $this->id . '-personal',
				'title'    => _x( 'Personal', 'My Account Activity sub nav', 'buddypress' ),
				'href'     => bp_loggedin_user_url( bp_members_get_path_chunks( array( $activity_slug, 'just-me' ) ) ),
				'position' => 10,
			);

			// Mentions.
			if ( bp_activity_do_mentions() ) {
				$wp_admin_nav[] = array(
					'parent'   => 'my-account-' . $this->id,
					'id'       => 'my-account-' . $this->id . '-mentions',
					'title'    => $title,
					'href'     => bp_loggedin_user_url( bp_members_get_path_chunks( array( $activity_slug, 'mentions' ) ) ),
					'position' => 20,
				);
			}

			// Favorite activity items.
			if ( bp_activity_can_favorite() ) {
				$wp_admin_nav[] = array(
					'parent'   => 'my-account-' . $this->id,
					'id'       => 'my-account-' . $this->id . '-favorites',
					'title'    => _x( 'Favorites', 'My Account Activity sub nav', 'buddypress' ),
					'href'     => bp_loggedin_user_url( bp_members_get_path_chunks( array( $activity_slug, 'favorites' ) ) ),
					'position' => 30,
				);
			}

			// Friends?
			if ( bp_is_active( 'friends' ) ) {
				$wp_admin_nav[] = array(
					'parent'   => 'my-account-' . $this->id,
					'id'       => 'my-account-' . $this->id . '-friends',
					'title'    => _x( 'Friends', 'My Account Activity sub nav', 'buddypress' ),
					'href'     => bp_loggedin_user_url( bp_members_get_path_chunks( array( $activity_slug, bp_get_friends_slug() ) ) ),
					'position' => 40,
				);
			}

			// Groups?
			if ( bp_is_active( 'groups' ) ) {
				$wp_admin_nav[] = array(
					'parent'   => 'my-account-' . $this->id,
					'id'       => 'my-account-' . $this->id . '-groups',
					'title'    => _x( 'Groups', 'My Account Activity sub nav', 'buddypress' ),
					'href'     => bp_loggedin_user_url( bp_members_get_path_chunks( array( $activity_slug, bp_get_groups_slug() ) ) ),
					'position' => 50
				);
			}
		}

		parent::setup_admin_bar( $wp_admin_nav );
	}

	/**
	 * Set up the title for pages and <title>.
	 *
	 * @since 1.5.0
	 *
	 */
	public function setup_title() {

		// Adjust title based on view.
		if ( bp_is_activity_component() ) {
			$bp = buddypress();

			if ( bp_is_my_profile() ) {
				$bp->bp_options_title = _x( 'My Activity', 'Page and <title>', 'buddypress' );
			} else {
				$bp->bp_options_avatar = bp_core_fetch_avatar( array(
					'item_id' => bp_displayed_user_id(),
					'type'    => 'thumb',
					'alt'	  => sprintf(
						/* translators: %s: member name */
						__( 'Profile picture of %s', 'buddypress' ),
						bp_get_displayed_user_fullname()
					),
				) );
				$bp->bp_options_title  = bp_get_displayed_user_fullname();
			}
		}

		parent::setup_title();
	}

	/**
	 * Setup cache groups.
	 *
	 * @since 2.2.0
	 */
	public function setup_cache_groups() {

		// Global groups.
		wp_cache_add_global_groups( array(
			'bp_activity',
			'bp_activity_comments',
			'activity_meta'
		) );

		parent::setup_cache_groups();
	}

	/**
	 * Parse the WP_Query and eventually display the component's directory or single item.
	 *
	 * @since 12.0.0
	 *
	 * @param WP_Query $query Required. See BP_Component::parse_query() for
	 *                        description.
	 */
	public function parse_query( $query ) {
		/*
		 * If BP Rewrites are not in use, no need to parse BP URI globals another time.
		 * Legacy Parser should have already set these.
		 */
		if ( 'rewrites' !== bp_core_get_query_parser() ) {
			return parent::parse_query( $query );
		}

		if ( bp_is_site_home() && bp_is_directory_homepage( $this->id ) ) {
			$query->set( $this->rewrite_ids['directory'], 1 );
		}

		if ( 1 === (int) $query->get( $this->rewrite_ids['directory'] ) ) {
			$bp = buddypress();

			// Set the Activity component as current.
			$bp->current_component = 'activity';

			$current_action = $query->get( $this->rewrite_ids['single_item_action'] );
			if ( $current_action ) {
				$bp->current_action = $current_action;
			}

			$action_variables = $query->get( $this->rewrite_ids['single_item_action_variables'] );
			if ( $action_variables ) {
				if ( ! is_array( $action_variables ) ) {
					$bp->action_variables = explode( '/', ltrim( $action_variables, '/' ) );
				} else {
					$bp->action_variables = $action_variables;
				}
			}

			// Set the BuddyPress queried object.
			if ( isset( $bp->pages->activity->id ) ) {
				$query->queried_object    = get_post( $bp->pages->activity->id );
				$query->queried_object_id = $query->queried_object->ID;
			}
		}

		parent::parse_query( $query );
	}

	/**
	 * Init the BP REST API.
	 *
	 * @since 5.0.0
	 *
	 * @param array $controllers Optional. See BP_Component::rest_api_init() for
	 *                           description.
	 */
	public function rest_api_init( $controllers = array() ) {
		parent::rest_api_init( array( 'BP_REST_Activity_Endpoint' ) );
	}

	/**
	 * Register the BP Activity Blocks.
	 *
	 * @since 7.0.0
	 * @since 12.0.0 Use the WP Blocks API v2.
	 *
	 * @param array $blocks Optional. See BP_Component::blocks_init() for
	 *                      description.
	 */
	public function blocks_init( $blocks = array() ) {
		$blocks = array(
			'bp/latest-activities' => array(
				'metadata'        => trailingslashit( buddypress()->plugin_dir ) . 'bp-activity/blocks/latest-activities',
				'render_callback' => 'bp_activity_render_latest_activities_block',
			),
		);

		if ( bp_is_active( $this->id, 'embeds' ) ) {
			$blocks['bp/embed-activity'] = array(
				'metadata' => trailingslashit( buddypress()->plugin_dir ) . 'bp-activity/blocks/embed-activity',

			);
		}

		parent::blocks_init( $blocks );
	}
}